Motor-starting mechanism



Dec. 3%. 19% 1,521,186.

S. JENCICK MOTOR STARTING MECHANISM Fild Feb. 14 19 1s 2 Sheets-Sheet 1 Fig. i.

S. JENCICK MOTOR STARTING MECHANISM Dec. 30 1924.

2 Sheets-Sheet ,2

' Filed Feb. 14 1916 Patented Dec. St 1924,

STEPHEN JENCICK, OF CLEVELAND, GHIOv ASSIQNOE' TO PEOSPEE I. SCHANZE, OF CLEVELAND, OHID.

D/ZOTOR-STARTING ItIECHi'iNISM.

Application. filed February 14, 1316 To all whom it may concern.

Be it known that l, STEPHEN JnNoioi; a subject of the Emperor of Austria, residing at Cleveland, in the county of Cuyahoga and State of Ohio, have invented certain new and useful Improvements in Motor- Starting Mechanism, of which the following is a specification.

This invention relates to starting devices for internal combustion motors and particularly a suitable driving structure arranged between the starting motor and the fly wheel.

More specifically the invention relates to a starting device for internal combustion motors and it contemplates the use of a gear utilized preferably in conjunction with the fly wheel and a starting pinion structure arranged on the starting motor shaft and comprising mechanism of a type such that the rotation of the motor shaft causes the driving pinion to be moved bodily in a radial direction with respect to the on the fly wheel into engagement with such gear and to rotate the same in the starting of the internal combustion motor, the mechanism being so arranged that when the latter is started its torque operates to throw the driving pinion out of mesh with it in a radial direction.

The advantage in the above arrangement resides in the fact that it is a well known principle of mechanics that gears are more readily brought into mesh in a radial direction than they are by a sliding engagement, especially where the pinion moved in radially is free to rotate as the teeth are brought into mesh which is the case in the appli: cants device.

The invention may be further briefly suinmarized as consisting in the construction and combination of parts hereinafter set forth in the following descriptiom drawings and claims.

Referring to the drawings Figure l is a side elevation of an internal combustion motor showing the device applied to the fly wheel thereof and the starting motor; Figure 2 is an enlarged view partly in section showing the device just before the starting pinion is moved into mesh with the fly wheel gear; Figure 3 is an end view looking from right to left in Figure 2; Figure 4 is a vi similar to Figure 2 except that it is taken, from a point looking up at an angle of 90 Serial I-To. 78,231.

to the view shown in Figure 2 and that the parts are in the position which they assume as the driving pinion is brought into mesh with the fly wheel gear; Figure 5 is a view similar to Figure 3 showing the position of the pinion as it just starts into mesh; Figure 6 is a view similar to Figure 2 except that it is taken looking down at an angle of 90 to that shown in Figure 2; Figure 7 is a View similar to Figure 3 showing the parts in the position that they assume when starting the motor or when the driving pinion is in complete mesh with the fly wheel gear; Figure 8 is an end view of the stop casing applied to the starting motor showing the spring in elevation; Figure 9 is a sectional view upon the line 99 of Figure 6, and Figure 10 is a detailed sectional view of the locking screw for the cam member.

In the embodiment shown 1 represents an internal combustion motor of any preferred type having a fly wheel 2 provided with a fly wheel starting gear 3 This structure is the preferred one although any analogous structure capable of performing the purpose may be utilized. Mounted upon a suitable bracket of the frame of the motor is a suitable starting motor 41-. of any preferred type having a shaft 5 of a suitable length to receive the parts mounted upon it and it upon the casing of this motor and upon the extended portion of this shaft that the mechanism is arranged.

Secured to the motor casing is a stop casing 6 preferably in the form of a hollow cup and having an opening 7 at the center for the shaft and pair of laterally extending ears 8 adapted to receive bolts 9 which are screwed into the motor casing. Engaging the inner peripheral wall of the casing G is a spring member comprising a ring portion it) forced into the casing inwardly extending webs 11 and a central washer 12, the webs together with the washer forming a spring structure for a purpose to be described. Loosely mounted upon the shaft is a sleeve 13 provided on the inside of the casing 6 with single lug 14L having a radially disposed shoulder or face 15 as shown in Figure 5 and elsewhere This sleeve is also provided at a point in align nient with the periphery the fly wheel gear with an eccentric ith its greatest radius in parallel alignment with the face or shoulder 15. The sleeve 13 is further provided with a short pin or projection 17 the center of which is on a longitudinal line with the major radius of the eccentric and also the face or shoulder 15 as is shown in the various views and the'object of this pin will be more fully disclosed. Rotatably mounted upon the eccentric 16 is a driving pinion 18 which is concentric with the eccentric and it is provided upon its right hand side face as shown in the drawings with a notch or recess 19 adapted at the proper time to engage the pin 17 and at a point substantially opposed to this notch or recess the pinion is provided with a pinion driving lug or hook 20 undercut slightly at 21 for a purpose to be described. Secured to the end of the shaft 5 is a hub 22 of a driving disc 23, the securing means in this instance being a screw 24: passing through the shaft and threaded in the disc. The inner side face of this disc is provided with a cam having a gradually rising portion 25 extending to a substantially flat portion 26. there being a slight depression or notch 27 at the junction of the portion 25 and the flat portion 26. The fiat portion is interrupted beyond th s recess 27 with a relatively large recess 28 adapted to form a socket and beyond this socket a driving lug 29. The forward face 30 of this driving lug is backed off or undercut to correspond to the face 21 so that these two faces when in engagement. tend to draw the parts toward each other or in other words, as will later appear. tend to draw the pinion toward the driving disc. The hub of this driving disc is arranged within the pinion driving lug 20.

The operation of the device will now be given. Assuming that the fly wheel is in a state of rest the operator in a well known manner not set forth herein. supplies current to the starting motor with the result that the rotation of the shaft 5. in the d rection indicated by the arrow in the several views causes the cam 25 of the driving disc to move under the nose or end of the pinion driving lug 20 with the result that the driving pinion is moved to the right into the position shown in Figure 2 when the shonlder formed by the notch 19 will engage the pin 17 as in Figure 2, the further movement of the pinion with respect to the eccentric being stopped. The cam 25 of the driving d sc. however, continues to move under the pinion driving lug 20 causing the pinion with the eccentric and the sleeve 13 to move to the right as shown in Figure 2 against the tension of the spring member mounted in the casing 6. This movement is continued until the nose of the pinion driving lug passes into the notch 27 when the lug 1 1 on the sleeve 13 passes beyond the face of one of the fixed stops 6 mounted in the stop casing. lVhen the parts are in this position they are free to rotate bodily but in rotating they come into the position shown in Figures 1 and 5 when the teeth of the driving pinion engage the teeth of the fly wheel gear thns placing a load upon the driving pinion. This load i sufficient to cause the driving disc 23 to move the pinion driving lug out of the notch 27 and onto the flat portion 26 when the disc will move without driving the pinion. This. however, continues only until the pinion driving lug 20 moves opposite to the socxet 28 when the tension of the spring member will move the sleeve, the eccentric and the driving pinion to the left into the position shown in Figures 6 and 7, when the pinion driving lug and the driving lug of the driving disc will be in engagement. The further rotation of the parts causes the pinion to come into complete mesh with the fly wheel by reason of the eccentric carrying the pinion bodily into mesh. The sleeve and eccentric are both held in. this position at this period by reason of the fact that the lug 15 on the sleeve 13 engages the right hand stop 6 carried by the stop casing 6 mounted on the motor. When the parts are in this position the inclined faces 21 and 30 draw the pinion away from the pin 17 so that the pinion can rotate freely. The drive of the pinion is then transmitted through the driving lugs. It is obvious, of course, that the driving shaft 5, when the parts are in driving position is eccentric to the center of rotation of the driving pinion but this does not affect the operation in as much the driving lugs permit such an operation. As soon as the internal combustion motor receives its first impulse which causes the fly wheel to rotate at great speed this extreme increase in the the speed tends to rotate the driving pinion 18 at a greater speed than the starting motor shaft thus causing the motor shaft and the driving disc to operate as a load upon the pinion. This causes the inclined lower face of the pinion driving lug to move up the inclined lower ace of the socket 28 thereby shifting the driving pinion into engagement with. the pin 17 and causing this pin to engage in the recess 19 again, and the continued rotation of the pinion at greater speed than the motor shaft and driving disc causes the pinion driving lug to move up onto the flat part 26 of the cam with the result that the single lug 15 on the sleeve 13 moves out of engagement with the stop 6 and passes above it due to the fact that the pinion then drives the sleeve 13 through the pin 17. The continued rotation of the pinion and sleeve at a greater speed than the driving disc causes the pinion driving lug 20 to move down theface of the cam to the low point and the lug 15 again engages the first stop 6 carried by the stop casing. In the meantime the rotatl F5 memes tion of the sleeve and the eccentric has moved the driving pinion clear of the fly wheel gear and completely out of mesh.

Having described my invention, claim 1. In a starting device for internal combustion motors, a motor, a starting gear carried thereby, a starting motor having a shaft, a driving pinion for the motor starting gear normally assuming a position in driving alignment therewith, a bearing member between the pinion and the starting motor shaft adapted to support the pinion in idle position, means to move the pinion into mesh with the motor starting gear and to move it outof mesh therewith and into normal idle position, and means between the starting motor shaft and the pinion whereby the latter is driven by the former.

2. In a starting device for internal combustion motors, a motor, a starting gear carried thereby, a starting motor having a shaft, a driving pinion for the motor starting gear normally assuming a position in driving alignment therewith, a bearing member between the pinion and the start ing motor shaft adapted to support the pinion in idle position, means to move the pinion into mesh with the motor starting gear and to move it out of mesh therewith and into normal idle position and a suitable coupling device between the starting motor shaft and the pinion whereby the latter is driven by the former.

In a starting device for internal coinbustion motors, a motor, a starting gear therefor, a starting motor having a shaft, a driving pinion for said gear surrounding said shaft and lying normally in driving alignment opposite said gear, automatically operated means for producing meshing relation between said pinion and gear, and means between the starting motor shaft and driving pinion whereby the latter is driven by the former.

4. In a starting device for internal cone bustion motors, a motor, a starting gear therefor, a starting motor having a shaft. a driving pinion for said gear surrounding said shaft and lying in driving alignment opposite said gear, automatically operated means for producing meshing relation b"- tween said pinion and gear, and a coupling device between the starting motor shaft and driving pinion whereby the latter is driven by the former.

5. In a starting device for internal combustion motors, a motor, a starting gear carried thereby, a starting motor ha ing a shaft a driving pinion for the motor starting gear normally assuming a position in driving alignment therewith, a sleeve carry ing said pinion means for holding the sleeve i P t n wit th P i n cut f m h,

means for holding the sleeve with the pinion in mesh, driving connect-ion between the starting motor shaft and the pinion, and means for releasing the sleew from normal idle position and for releasing the pinion from normal driving position.

6. In a starting device for internal com bustion motors, a motor, a starting gear carried thereby, a starting motor ha 'ng a shaft, a driving pinion for the motor stariing gear normally assuming a position in driving alignment therewith, a sleeve carering said pinion means for holding the sleeve in position with the pinion out of mesh. means for holding the sleeve with the pinion in mesh, driving connections between the starting motor shaft and the pinion, and means between the starting motor shaft and the pinion for driving the same and for re leasing the same at the proper time from idle position and from driving position.

7. In a starting device for internal conibustion motors, a motor, a starting gear carried thereby, a starting motor having a shaft, a driving pinion for the motor start ing gear normally assuming a position in driving alignment therewith, a sleeve mounted on the starting motor shaft and having an eccentric forming a bearing for the driving pinion, means for holding the sleeve with the pinion in mesh, driving connections between the starting motor shaft and the pinion and comprising a driving member carried by the motor starting shaft, means between the driving member and the pinion whereby the latter is driven by the former and whereby the rotation of the starting motor shaft causes the release of the eccentric sleeve and moves the pinion into engagement with the starting gear, and means whereby the driving of the pinion by the starting gear releases the eccentric sleeve and pinion and moves them into normal idle position.

8. In a starting device for internal conibustion motors, a motor, a starting gear carried thereby, a starting motor having a shaft, a driving pinion for the motor starting gear normally assuming a position in driving alignment therewith, an eccentric sleeve mounted on the starting motor shaft for supporting said pinion. means for hold ing the sleeve in position with the pinion out of mesh, means for holding the sleeve with the pinion in mesh, driving connections between the starting motor shaft and the pinion and comprising a driving member carried by the starting motor shaft, means between the driving member and the pinion whereby the latter is driven by the former and whereby the rotation of the starting motor shaft causes the release of the eccentric sleeve and moves the pinion. into engagement with the starting gear, means whereby the driving of the pinion by the starting gear releases the eccentric sleeve and pinion and moves them into normal idle position, and means for temporarily connecting the pinion withthe sleeve in its release from the two positions.

9. in a starting device for internal cone bastion motors, amotor,astarting gear carried thereby, a starting motor having a shaft, a driving pinion for the motor starting gear normally assuming a position in driving alignment therewith, an eccentric sleeve mounted on the starting motor shaft for supporting said pinion, means for holding the sleeve in position with the pinion out of mesh, means for holding the sleeve with the pinion in mesh, driving connections between the starting motor shaft and the pinion and comprising a driving member carried by the motor starting shaft, driving lugs one carried by the driving member and the other by the pinion whereby the latter is driven by the former, a cam carried by one of said members and 00- operating with the driving lug of the other whereby upon the initial rotation of the starting motor shaft the pinion is moved into temporary locked, position with respect. to the sleeve and the eccentric sleeve is shifted to release it so that it may rotate with the starting motor shaft so that the pinion may engage the starting gear said cam then releasing the eccentric sleeve and permitting the driving lugs to come into engagement and the eccentric sleeve to come into position locked against bodily movement, and means for normally tending to force said eccentric sleeve into locking position.

10. In a starting device for internal combustion motors, a motor, a starting gear carried thereby, a starting motor having a shaft, a driving pinion for the motor start ing gear normally assuming a position in driving alignment therewith, an eccentric sleeve mounted on the starting motor shaft for supporting said pinion, meansfor holding the sleeve in position with the pinion out of mesh, means for holding the sleeve with the pinion in mesh, driving connections between the starting motor shaft and the pinion and comprising a driving member carried by the starting motor shaft, driving lugs, one carried by the driving member and the other by the pinion, whereby the latter is driven by the former, a cam carried by one of said members and cooperating with the driving lug of the other whereby upon the initial rotation of the starting motor shaft the pinion is moved into temporary locked position with respect to the sleeve and the eccentric sleeve is shifted to release it so that it may rotate with the starting motor shaft whereby the pinion may engage the starting gear, said cam then releasing the eccentric sleeve and permitting the driving lugs to come into engagement and the eccentric sleeve to come into locked position, and a spring for normally tending to force said eccentric sleeve into looking position. v V p 11. In a starting device for internal com= bustion motors, a starting gear, a starting motor having a shaft, a stop casing having apair of diametrically disposed stops, a sleeve provided with an eccentric loosely mounted upon the shaft, said eccentric serving a hearing for a driving pinion, a driving pinion, a lug carried by said sleeve and adapted when the sleeve is in. one posit-ion to engage either of said stops carried by the stop casing, means normally tending to force said sleeve into such position, a temporary lock between the pinion and the sleeve, means between the starting motor shaft and the pinion whereby upon the rotation of the starting motor shaft the pinion is temporarily locked to the sleeve and the sleeve is shifted bodily to release its lugs from the stops of the stop casing and is shifted into engagement with the fly wheel, and means for bringing about the release of the eccentric sleeve whereby the impulse of the motor may throw the pinion and sleeve into normal idle position.

12. In combination, an internal combustion motor, a starting gear therefor, a starting motor, a pinion driven by said starting motor and supported'for orbital movement about an axis into and out of mesh with said starting gear, the arrangement being such that the torque of said starting motor shifts the position of said starting pinion in its orbit, and means for limiting movement of said starting pinion in said orbit to a position in proper meshing relation with said starting gear.

13. In combination, an internal combustion motor, a starting gear therefor, a starting motor, a pinion driven by said starting motor and supported for orbital movement about an axis into and out of mesh with said starting gear, means for retarding the rotation of said pinion about its own axis and for causing said pinion to travel in its orbit into mesh with said starting gear, and mechanism for releasing said retarding means so as to permit free rotation of said pinion about its own axis upon being brought into mesh with said gear.

14. In combination, an internal combustion motor, a starting gear therefor, a starting motor, a pinion driven by said starting motor and supported for orbital movement about an axis into and out of mesh with said starting gear, means for retarding the rotation of said pinion about its own axis and for causing said pinion to travel in its orbit into mesh with said starting gear, and

means arranged when the pinion reaches meshmg relation with said starting gear to relieve the retarding effect upon said pinion.

15. in combination, an internal combustion motor, a starting gear therefor, a starting shaft, a member mounted to turn upon said shaft and carrying a pinion driven thereby, the turning motion of said member producing motion of said pinion bodily in an orbital path of movement, means for retarding rotation of said pinion and cansing motion of said member about the axis of said shaft to produce meshing relation between said pinion and gear, and means adapted when meshing relation is reached to relieve said retarding effect.

16. In combination, an internal combustion motor, a starting member therefor, a starting motor, a rotatable member driven by said starting motor and supported for orbital movement about an axis into and out of driving relation with said starting member, means for retarding the rotation of said rotatable member about its own axis and for causing said rotatable member to travel in its orbit into driving relation with said starting member, and means arranged when said driving relation is reached to relieve the retarding effect upon said rotatable member.

17. Starting mechanism for internal combustion engines, comprising in combination with said engine, a starting motor, a rotatable member driven by said motor and movable in an orbit into and out of a position in which it operatively connects said motor and engine, and mechanism actuated by said motor for causing said member to move in its orbit into said position, said mechanism being also actuated by said engine when started for causing said member to move reversely in its orbit out of said position.

18. Starting mechanism for internal combustion engines, comprising in combination with said engine, a starting motor, a rotatable member driven by said motor and movable in an orbit into and out of a position in which it operatively connects said motor and engine, means for retarding rotation of said member upon its own axis and for causing it to move into said position, and means for relieving said retarding effect.

19. Starting mechanism for internal combustion engines, comprising in combination with said engine, a starting motor, a rotatable member driven by said motor and movable in an orbit into and out of a position in which it operatively connects said motor and engine, means for retarding rotation of said member upon its own axis and for causing to move into said position, and means actuated when the engine starts and its speed increases for relieving said retarding effect.

20. In an engine starter, arotor, a member loosely mounted thereon, a driving element carried thereby and adapted to be operatively connected with the fly wheel of the engine, means operated by the rotor for rotating the driving element and turning the member toward the fly wheel to cause the driving element to be operatively connected with the same, and resilient means cooperating with said member for normally retaining the member in a position where the driving element will be disconnected from the fly wheel.

21. In combination, an internal combustion engine, a starting motor having a shaft, a supporting member having turning movement about said shaft, a rotatable member driven by said shaft and carried by said supporting member and adapted by movement thereof to be moved into and out of driving position connecting said shaft and engine, and means for operatively connecting said shaft and supporting member to produce turning movement thereof.

22. In combination, an internal combustion engine, a starting motor having a shaft, a supporting member having turning movement about said shaft, a rotatable member driven by said shaft and carried by said supporting member and adapted by movement thereof to be moved into and out of driving position connecting said shaft and engine, means for operatively connecting said shaft and supporting member to produce turning movement thereof, and for disconnecting said shaft and supporting member when said driving position is reached.

In testimony whereof I aflix my signature.

STEPHEN JENCIOK. 

